I work nights in restaurants so I always have my eyes open for curb cash on the way home. About 2 weeks ago I saw a crt monitor on the ground and some other wires sticking out of a curbside can. I couldnt stop there so I parked half a block away and walked over. I found a complete home computer and old super nintendo with a box FULL of wires. I started hauling it back to the car and on the way to get the 3 arm full, I saw a van pull up and stop on the other end of the block. The driver jumps out and starts yelling at me to stop and put HIS stuff back because he SAW it first. I tried to explain to him that he did not own the curb and first come first served. He did not agree with me. He then got loud and vulgar with me, so it quickly became a full blown argument on the sidewalk. He then got in my face and told me he was just gonna kick my skinny a** and take it. I am not a a big guy and never resort to violence to solve a problem, but will not take bs from someone like that ever. I then flipped my knife out and quickly made sure he understood that I would have no problem feeding his own hands to him if he couldnt keep them to his self.It did not take him long to go back to his van. after loading the rest and leaving I noticed him following me. I stopped in the road to see if there was something I could help him with and before I even got to his van a police officer pulled up. Long story short this D.B. called the cops on me, because I pulled a knife on him!! After a quick chat with both of us, the officer questioned me about my weapon. After I handed him my concealed carry permit and my .38 spcl(that van man didnt even know was in my back), the officer realized which one of our storys was true.He returned my pistol and knife and applauded my restraint in not shoving my .38 in the big mouths face when I was threatened by someone who out weighs me by about 100 lbs. As I was driving away I heard the officer telling him he was an idiot and how lucky he was that I didnt reach in my other pocket. I have seen him a couple times since then, but havent had another problem with him. Thank you MCPD.